Key Area 2.4 - Combustion

Question 1

What is a fuel

Answer 1

A substance which reacts exothermically with oxygen to produce energy

Question 2

What are the products of incomplete combustion

Answer 2

Co
Water
C soot

Question 3

Name some high energy molecules

Answer 3

Glucose
Sucrose
Fructose
Lactos
Maltose
Glycogen
Carbohydrates (CHO)

Question 4

Give examples of a monosaccharide

Answer 4

Glucose

Question 5

Gives examples of a polysaccharide

Answer 5

Starch and cellulose

Question 6

Give examples of a disaccharide

Answer 6

Sucrose and maltose

Question 7

What is polymerisation

Answer 7

Polymerisation is a chemical reaction where small monomers like glucose join together to create a polymer such as starch

Question 8

What is condensation eliminisation

Answer 8

Monomers join together loosing a small molecule in the process, usually water

Question 9

What is the equation for the combustion of glucose and photosynthesis

Answer 9

Glucose + oxygen = carbon dioxide + water

Question 10

What is fermentation

Answer 10

A chemical reaction controlled by the enzyme zymase which converts glucose to ethanol and carbon dioxide

Question 11

What does the Benedicts solution test for

Answer 11

Fructose glucose and maltose

Question 12

What is combustion

Answer 12

When a substance burns reacting with oxygen to produce energy. Combustion is an exothermic reaction